Typewriting machine



7 April 1, 1930. F. A. HART TYPEWHITING MACHINE Original Filed Oct. 22, 192B NVENTOR 5W&

BY M ATTORNEY Patented Apr. 1, 1930 UNITED STATES PATENT OFFICE FREDERICK A. HART, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO REMINGTON TYPEWRITER COMPANY, OF ILION, NEW YORK, A CORPORATION OF NEW YORK TYPEWRITING MACHINE Original application filed October 22, 1926, Serial No. 143,382. Divided and this application filed December 13, 1927. Serial No. 239,706.

" 1 when desired.

To the above and other ends which will hereinafter appear, my invention consists in the features of construction, arrangements of parts and combinations of devices set forth in the following description and particularly pointed out in the appended claims.

In the accompanying drawings, wherein like reference characters indicate corresponding parts in the different views- Fig. 1 is adetail, fragmentary, perspective view of the line indicating means and some of the associated parts.

Fig. 2 is a detail side view of the same.

Fig. 3 is an enlarged, detail, fragmentary perspective View of the improved means for adjustably connecting one end of the wire line-indicator to its supporting arm.

Fig. 4 is an enlarged, detail, fragmentary, perspective view of one means for'connecting the other end of the line indicating wire to its supporting arm.

The present case is a division of my application Sr. No. 143,382, 'filed October 22, 1926. The line indicating means disclosed herein were designed primarily for use in a machine of the character disclosed in said parent application, and for automatic control by other parts not shown herein, as well as for individual or separate control by its own finger piece. It should be understood, however, that the line indicating means of the present invention are not restricted to embodiment in the machine referred to but may be employed in various styles of typewriting machines, wherever found available.

In my Patent No. 1,650,351, dated Nov. 22, 1927, I have claimed broadly a wire line-indicator of the character disclosed herein as well as means for automatically controlling such indicator. The present invention is directed more particularly to means by which the line lndicating wire is held taut between and is adjustably connected to its supporting arms.

In the drawing I have shown only so much of a Remington front feed bookkeeping machine as is necessary to illustrate my invention in its embodiment therein.

In said machine a cylindrical platen l is supported in a platen frame which includes end-plates 2, each carrying a depending fixedly connected supporting member 3. These members are provided with bearings for a rock shaft 4 which extends throughout the length of the platen and beneath the latter. The bearing for the left-hand end of this shaft is in the nature of a threaded bushing 5 received in a tapped opening in the depending portion 3 of the left-hand'end-plate 2 of the platen frame. The bushing receives the left-hand reduced end 6 of the shaft, whereas, the corresponding right-hand reduced end is received directly in a bearing opening in the other end-plate 2. The rock shaft 4 and the parts carried thereby are thus supported by the carriage to travel therewith from side to side of the machine over the top plate. Two arms or supporting members 7 and 8 are secured to the rockshaft near opposite ends of the platen. Each arm in the present instance has ahub 9 that surrounds the shaft and is secured theretoby a pin 10 or any other suitable means. The left-hand or actuating, arm 7 extends upward and rearward above but off beyond one end of the platen and terminates in a finger piece 11, whereby said arm andthe parts controlled thereby may be actuated at will. The arm 7 stands in cooperative relationship with means for controlling the shifting movement of certain of the feed rollers, to be automatically controlled thereby, as set forth in my hereinbefore mentioned application, but

which it is unecessary to further describe herein.

The actuating arm 7 constitutes one of two supporting arms (7 and 8) for a fine wire line-indicator 12. Said indicator extends longitudinally throughout the length of the platen and is adjustably connected to the arm 7 by novel means of the present invention which will now be described.

In the present instance the arm 7 is formed with an anvil-like lug 13 that extends in a plane at right angles to the plane of said arm, as indicated in Fig. 3. This lug constitutes one jaw of a clamp, a plate 1%. con stituting the other jaw of said clamp. A pair of widely separated headed screws 15 have their stems extending freely through openings in the clamping aws 13 and 14: and engage tapped openings in a plate 16 in the rear of the plate 14. One end of the wire line-indicator 12 passes between the clamping jaws 13 and 1 L intermediate the screws 15, and may be adjusted up and down between and in theplane of the contact faces of said jaws. By tightening the screws 15, the clamping jaw le will be drawn towards the jaw 13 and firmly clamped and hold the wire 12 in its adjusted position on the arm 7. One distinct advantage of this form of adjusting means is that itenables the assembler to grasp, with a pair of pliers, the projecting end of the wire 12, shown in Fig. 3, and draw the wire taut throughout its length. By then bending the wire over a corner of the anvil-like aw 13, as shown, the wire will be prevented from relaxing from its taut condition while it is beingadjusted up or down at this end on the arm '7, and while the screws 15 are being tightened to firmly hold the wire in its adjust-ed position.

I also prefer to provide an outwardly projecting stop 17 off-set from the plate or jaw 14 and which coacts with a stop pin 18 that projects inward from the left-hand endplate 2 of the platen frame, and thus limits the rearward movement of the arm 7 and the parts controlled thereby. This method of limiting the movement of the part-s is superior to the provision of a stop to coact with the platen for this purpose, since in the present construction the stops do not interfere with a register sheet, for example, reaching to or extending beyond the ends of the platen.

The opposite end of the line indicating wire may be adjustably secured to the arm 8 by any suitable means. Obviously means of the same character as are employed on the arm 7 may be used onthe arm 8. However, in the present instance I employ a vertically adjustable slotted plate 19 (see Fig. 4) held by two clamping screws 20 on the supporting arm 8, as disclosed in my hereinbefore mentioned application and patent. In this construction the wire is looped at one end, as indicated at 21, and passes through an opening 22 in the plate 19. The adjustment of this plate effects an adjustment of the righthand end portion of the wire 12 in the same plane as" the adjustment of the wire at the left-hand end, or up and down relatively to the printing line.

A coiled cont 'actile spring 23 is connected at one end to the arm 7 and at its opposite end to a pin 24: extending inward from the left-hand end-plate This spring tends to return the arm 7 and the parts :onnected therewith to the normal, Figs. 1 and posi tion, where the arm is arrested by the co operation of the stops 1'? and 18.

As pointed out in my hcreinbefore mentioned patent and application, the line indicating wire 12 may be adjusted to substantially register either with the tops of the printed characters at the printing line or with the bottoms thereof, although it is usu ally adjusted to substantially register with the tops of such characters. It will be understood that when thus adjusted the wire does not interfere with the types which ii'tlll-(o below such wire, nor with the operators view of the printed characters at the printing line below said wire, nor with the printed characters in the line immediately above the printing line.

The means for connecting the wire 12 to the arms 7 and 8. and for affording an adjustment of the wire on said arms while the stretch of wire between the arms is held and maintained taut, are simple and inexpensive to manufacture and have proved highly eiiicient in use.

In the use of the line indicator it may be moved forward from the Figs. 1 and 2 effective indicating position, to an ineffective position, either automati'a ly or by the finger piece 11. In either instance the indicator moves from and back to indicating position around the axis of the rock shaft 4.

What I claim as new and desire to secure by Letters Patent, is

1. In a typewriting or like machine, the combination of a platen, a line wire line indicator, supporting means for supporting said indicator for movement to and from indicating position, and means for adjustably securing said indicator on said supporting means comprising releasable clamping jaws by and between which one end portion of the wire indicator is held, on the wire indicator enabling it to be adjusted relatively to said jaws and the printing line.

2. Ina typewriting or like machine, the combination of a platen, a fine wire line indicater, a pair of movable supporting arms on which said wire indicator is mounted, and means for adjustably connecting said wire indicator to said arms including releasable clam ing jaws carried by one of said arms and y and between which one end portion of the line indicator is held and may be adjusted to different set positions relatively to the printing line and to said jaws when the pressure of the jaws on the indicator is released.

3. The combination of a carriage; a pair of arms pivoted thereon; a wire line indicator;

and means for securing said wire to and for holding it taut between said arms comprising a pair of clamping jaws one of which is formed as a part of one of said arms and constitutes an anvil around a corner of which a free end portion of the indicating wire beyond the clamping jaws may be given a sharp bend to prevent creation of slack in the wire before it is held in place between the clamping jaws, and means for drawin said clamping aws together on. the wire.

l. The combination of a carriage; a platen carried thereby; a rock-shaft carried by the carriage arms secured to said rock-shaft near opposite ends of the platen; a wire lineindicater; and means for adj ustably securing the wire to and holding it taut between said arms comprising jaws having their engaging faces in the plane of adjustment of said wire relatively to the printing line, and means for drawing said clamping jaws together on the wire.

5. The combination of a carriage; a platen carried thereby, a rock-shaft carried by the carriage beneath the platen; arms secured to said rock-shaft near the opposite ends of the platen; a wire line indicator; and means for adjustably securing the wire to and for holding the wire taut between said arms comprising jaws having their engaging faces in the plane of adjustment of said wire relatively to the printing line, and a pair of screws between said clamping jaws to draw them together and clamp the wire between them, said screws being widely separated so as not to interfere with the adjustment of the intervening wire when the screws are loosened.

6. In a typewriting or like machine, the combination of a platen, a fine wire line indicator, a pair of movable supporting arms on which said wire indicator is mounted, means for adj ustably connecting said wire indicator to said arms including releasable clamping jaws carried by one of said arms and between which one end portion of the line indicator is held and may be adjusted to different set positions relatively to the printing line when the pressure of the jaws on the indicator is released and means for limiting the movement of said arms and wire towards the platen comprising a stop carried by one of said arms and a coacting stop on the platen frame.

7 The combination of a carriage; a platen carried thereby; a rock-shaft carried by the carriage; arms secured to said rock-shaft near opposite ends of the platen; a wire line inclicator; and means for adjustably securing the wire to and holding it taut between said arms comprising jaws having their engaging faces in the plane of adjustment of said wire relatively t0 the printing line, and means for drawing said clamping jaws together on the wire; and means for limiting the movement of said arms and the wire line indicator towards the platen comprising a stop projecting outward from one of said clamping jaws, and a coacting stop carried by the platen frame.

8. In a typewriting machine, the combination of a platen, a wire line indicator cooperative therewith to indicate the printing line and means for supporting said wire line indicator at its ends and for maintaining it taut and affording an adjustment of the indicator relatively to its supporting means and the printing line, said means comprising releasable clamping jaws coacting with one end of the wire and the clamping faces of which are substantially in the plane in which said indicator is to be adjusted.

Signed at the borough of Manhattan, city of New York, in the county of New York, and State of New York, this 12th day of December, A. D. 1927.

FREDERICK A. HART.

CERTIFICATE OF CORRECTION.

Patent No. 1,752,484. Granted April 1, 1930, to

FREDERICK A. HART.

It is hereby certified that error appears in the printed specification of the above numbered patent requiringeorreetion as follows: Page 2, line 113, claim 1, after "held," insert the words "the freeing oi clamping pressure of the jaws"; and that the said Letters Patent should he read with this correction therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 13th day of May, A. D. 1930,

M. J. Moore, (Seal) Acting Commissioner of Patents. 

